神马品牌网三叉神经怎样治:请写出过程 谢谢
来源：百度文库 编辑：神马品牌网 时间：2024/04/28 22:51:05
⒈(3+1)(3^2+1)(3^4+1)(3^8+1)
⒉(x-y-z)(x+y+z)
⒉(x-y-z)(x+y+z)
⒈(3+1)(3^2+1)(3^4+1)(3^8+1)
=[(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)]/(3-1)
=[(3^2-1)(3^2+1)(3^4+1)(3^8+1)]/2
=(3^16-1)/2
⒉(x-y-z)(x+y+z)
=[x-(y+z)](x+y+z)
=x^2-(y+z)^2
=x^2-y^2-2yz-z^2
1.3*2^n+1 n=0,1,2,3,4,5,6.......
2.=[x-(y+z)][x+(y+z)]=x^2-(y+z)^2=x^2-(y^2+2yz+z^2)=x^2-y^2-2yz-z^2
2.=[x-(y+z)][x+(y+z)]
=x^2-(y+z)^2
=x^2-(y^2+2yz+z^2)
=x^2-y^2-2yz-z^2